贝塞尔函数(Bessel functions)是一类函数的总称,基于下述常微分方程得到。 x2d2ydx2+xdydx+(x2−α2)y=0 该方程的通解无法用初等函数表示,一种典型的解形式如下。 y(x)=c1Jα+c2Yα(x) 其中, Jα(x) 为第一类贝塞尔函数, Yα(x) 为第二类贝塞尔函数(Bessel function o
gcc的libstdc++的实现是自己手写的 gcc/libstdc++-v3/include/tr1/bessel_function.tcc at 673822455ed8...
{ result = Bessel(n, x); printf("J[n](x) = %f\n",result); } else { printf("The function of bessel's is went to ∞ !"); } system("pause"); } double Bessel(int n, double x) { if (n == 1) //结束条件1 { return sin(x) / x; } else if (n == 2) //结束条件2...
{ result=Bessel(n,x); printf("J[n](x) = %f\n",result); } else { printf("The function of bessel's is went to ∞ !"); } system("pause"); } doubleBessel(intn,doublex) { if(n==1)//结束条件1 { returnsin(x)/x; } elseif(n==2)//结束条件2 { returnsin(x)/(x*x)-...
Bessel functionHankel FunctionLegendre PolynomialsChebyshev polynomialsAPPENDIX B. SPECIAL FUNCTIONS 1Appendix BSpecial FunctionsKey properties of special functions as they are often used in plasma physics aresummarized in this appendix.B.1 Heaviside Step FunctionThe Heaviside step function is usually just ...
假设我有一个写好的C语言函数,定义在GSL(GNU Scientific Library)里面的Bessel函数。 // foo.c #include double foo(double a, double b){ return gsl_sf_bessel_J0(a + b); } 接下来,我们想在python中用cffi模块调用这个用C语言定义的函数foo的“签名”,即输入和输出的数据类型。
Riemann zeta function C++ Copy double riemann_zeta(double x); float riemann_zetaf(float x); long double riemann_zetal(long double x); Spherical Bessel functions of the first kind C++ Copy double sph_bessel(unsigned n, double x); float sph_besself(unsigned n, float x); long double...
Riemann zeta function C++ Copy double riemann_zeta(double x); float riemann_zetaf(float x); long double riemann_zetal(long double x); Spherical Bessel functions of the first kind C++ Copy double sph_bessel(unsigned n, double x); float sph_besself(unsigned n, float x); long double...
Bessel functions in CW radar連續波雷達中的貝塞爾函數 Binary integrator二進位積累器 Binary sequences二進位序列 Binomial-weight MTI filter二項式加權動目標顯示濾波器 Bipolar power transistors雙極功率電晶體 Bipolar video雙向視頻 Birds in MTI radar動目標顯示雷達中的鳥類 Bistatic radar雙基地雷達 Blakes worksheet...
Short-range screening is exemplified by a Gaussian field correlator, long-range screening by a J0 Bessel function. The short-range screening length is obtained analytically; this is found to be in substantial agreement with recent experiments. For long-range screening, an accurate asymptotic formula...